Carton-blank separating and feeding mechanism



June 3, 1 930. JURGENS ET AL 1,761,794

CARTON BLANK SEPARATING AND FEEDING MECHANISM Filed June 8, 1928 4Sheets-Sheet l YIIIIIII/II/I u I June 3, 1930. E. G. JURGENS H ,7

- CARTON BLANK SEPARATING AND FEEDING MECHANISM I Filed June 8, 1928 4Sheets-Sheet 2 June 3, 1930. v JURGENS ET AL 1,761,794

- CARTON BLANK SEPARAUNG AND FEEDING MECHANISM Filed June 8. 1928 4Sheets-Sh e'et 3 June 3, 1930 JURG'ENS ET AL CARTON BLANK SEPARATING 4NDFEEDING MECHANISM Filed June 8, 1928 4 Sheets-Sheet 4 as tohold the pawl19 out of engagement with the ratchet 20 for more .or less of the strokeof the pavvl. The purpose of this adj ustfment.

is to cause the magazine ofcarton blanksto feed upwardly at a ratecorrespond ng with the thickness of the blanks. In order to make theadjustment of'the curvedplate" 24 auto- 3 finger 31 carried by anarm 32fa st to shaft30 the top of a stack of carton blanks as shown 25 ,inFig. 2. Shaft 'is rocked in this manner matic' to suit the thickness ofthe carton blanks; the plate 24 is carried by an arm 25. .journaled uponshaft18 and rigid with a pulley 26. A cord 27 passes over the pulley 26,Fig; 7. One endof' the cord 27 isattaohed to a spring 28 anchored. tothe machine frame. The opposite end'of the cord 27 isattach'e'd to anarm 29-fast to an oscillating shaft 30.

The shaft 30 is oscillated once for each a carton blankis separatedfromthe remainder'of the 'stackbyi means hereinafter described. The extentofoscillation' of shaft 30 andaccordingly" the eXtentof adjustment ofthecurved plate' 24is determined by a andarranged to come intoengagement with means of a spring 33 (Fig. The finger 31 is normallyheld out of engagement with the stackof cartons by .an'arm 34 fast toshaft '35. The arm 34 engages the shankof a bolt 36 extending laterallyfrom arm which'carriesfthe finger 31. a When the arm 34 rocks to theright (Fig.7) 5 the arm 32 follows under the action ofspring 33; Spring28 accordingly draws onthe cord 27 which bell crank lever 42 to rock insuch 'dire ction as to cause friction member 41to bear down wardlyyuponthe top of the stack of carton blanks which areindicated at 44 (Fig. 1).The action of the friction device 41'; on the j.

uppermost blank of the stack of blanks" is to cause it to buckle awayfrom the remainder of the stack asindicated in' Fig. 2. .The separatedblank is atthis timeprevented from sliding. off of the'stack of blanksby retaining fingers 45 wllichare rigidly secured to shaft H After; ablank has been buckledas indicated in Fig. 2, the fingers 45 arerockedaway Y from the edge ofthe'blank andpermfitthe blank to spring back intoflattened condition with its edge incooperative relation with the roller46 and feed belts 47.1, The retaining fingers 45 are rocked in thismanner by means,

of a cam 48 fast todrive shaft 4 and cooperat-. ing Wltlla rolleron theend of an arm 9 fast to shaft 6. The retaining fingers49 are nor- 3 disc40 fast to? many held in position. shown in Fig. 21 by spring49 (Fig.3).

It is customary in inachinesfof this class to 5 place a portion. oflining paperupon' each blankafter it is separated from the stack and 7gi 5' Q conveyed out of the machine to' the folding jm'e'chanism.' 'Forthis purpose the present machine is provided with a support 50ff0r aroll of'lining paper-'51. 'The'lin-ing paperi s i lead overidlingjrollers '52 and Zfrom there i it passes between a feed roller 53and-a pair'of V frictionally driven pressure' rollers 54. The

roller 53 "is on a constantly driven shaft 55', but'ithe paper is'notcontinuously fed because rollers 54'are arranged to move into. and outs0 of feeding relation with the roller 53. The p period oftime inwhichcontact is madefbe tween rollers 54 and 53. determines the length"of the strip which is fed for eachop'eratiom of the blank separatingmechanism. "The-s5 Yin-fillers. 54 f fre k tc' g ment-Q i h f roller5311M l v 5 iv d, a sha 51 i and arranged to cooperate' with a pairofcaiiis 1 y 58, one of which is loose the otherfast'on I shaft 53."For'this, pu'rpo'sethe lever 56f car-1 riesa ro1ler59 for cooperatingwith'the cams 58. length of the; crest 60. of the "cams l if T58 may beincreased by changing therelative angular positions ofthe cams asprovided for V by set screw 61 (Figs. land 9.) The set screw 61passesthrough a'slot .6.2-i n oneofthecam's so that it may clamp the'twotogether. y

the lining paper passes, andis'; operated by a cam 65; faSt tOdriveshaftfiQlThe:fcam 65. operates on'a roller 66 car i abya mez fastto shaft .63 to which is also seeuredithe arms; 1 i a 69 carrying'the'knife 63.. "Afterbeing-oper .105;

"spring 70.

"VVhen a atcd b 1 11.65 the knifef restoredby a carton blank isseparated'fron a fstaclgof blan ksas shown in Fig 2, edges or; e; s patedib an wh fcllgm g engag I edges on the 1 next lowerjblank. are guided7 clear 'of' thelower blank bylguidej fingers 71 The support for thecartonblanks may be]. adjusted upwardly or downwardlyindepend- 11.5 entofgthe ratchet drive-therefor,illustratedin Figs. 10 and llbyjneal wheel72 which issejcured togshaft lil,

ously' rotated and thro'ugh] gear connections drives the rotatingshafts"2,'3,4.and 5, land 3); Shaft 2, by pitman connection 38'oscillates the latter shaft and jthroughiit. eflects the reciprocatingaction o'f-thet'ojotlied r i n? a t n" pa atingld vi 4 Thi device has afeed'motion towardfthelretain' 7 ng fiegers4 ig- 2) when the maxim in:

the .positionshown'in this figure? The up- 3" and'hasthreaded.engagementwith'theother,

U AkniteGS for' shearingjthe nai g apa, f cooperates withjaifixedbladej64' o ver-wl1ich 0 sfof'ithe hand I n'the'operatiojn ofthe'mechanism' iscl'lbediithe ma liidriveshaf continu 0 .permost cartonblank is thereby buckled as shown in Fig. 2 and at the end of a strokeof theseparating element 41 the fingers 45 are rocked upwardly bygtheaction of cam 48. The buckled portion of the carton then straightensout, its edge engaging roller 46 at the point of contact with the belts47. The

' separated carton is carried along by belts 47 and as it leaves themachine receives the portion ioflining paper severed by the knife 63.The carton blank support 9 is moved upwardly by the worm gearing andpawl and ratchet feed mechanism shown in Figs. 10

and 11 as controlled by the finger 31 (Fig. 2)

"Wienin its'extreme forward position. This finger moves forwardly underthe actlon oi spring (Fig. '5') according to the thickness ofthe removedcarton blank. Through the cord connection'27- with pulley 26 (Fig.

'7) the shield 24 is adjusted to regulate the effective, stroke of pawl'19.

Although'but one specific embodiment of this invention has been herein.shown and described, it will be understood that numerous details of theconstruction shown may be altered or'omittedwithout departing from thespiritof this invention as defined by the following claim.

We claim: In a carton blank separating and feeding mechanism, .asupporting, frame, a support for a stack of carton blanks, a frictiondevice and a retainer for respectively engaging the surface and the edgeof the uppermost blank,

; 7 means for movingsaid friction device toward said retainer wherebythe engaged blank is moved relative to the next lower blank andseparated from the stack by buckling, and

guide fingers on'said frame located in registering cutout portlons ofsaid blanks tor guiding the edges of the cutout portions'oi the engagedblank clear of the edges ofthe cutout portions of the next lower blank.

Signed at Chicago this 6th day of June,

EMIL G. JURGENS. HAZEN K. BECKER.

